From b03218c78bcb28597cb6f98f7350eac1b5171cba Mon Sep 17 00:00:00 2001
From: Aminda Suomalainen <suomalainen+git@mikaela.info>
Date: Sun, 7 Apr 2024 17:34:36 +0300
Subject: [PATCH] unbound/cache.conf: add prefetch & prefetch-key

---
 etc/unbound/unbound.conf.d/cache.conf | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/etc/unbound/unbound.conf.d/cache.conf b/etc/unbound/unbound.conf.d/cache.conf
index 0e9b6a3c..435a88e2 100644
--- a/etc/unbound/unbound.conf.d/cache.conf
+++ b/etc/unbound/unbound.conf.d/cache.conf
@@ -15,3 +15,8 @@ server:
 	# minute in the wild, I think 5 mins shouldn't break anything, but bigger
 	# might.
 	cache-min-ttl: 900
+	# Update cache for popular items before they expire. ~10 % traffic
+	# increase according to `man unbound.conf`
+	prefetch: yes
+	# Fetch keys when DS is encountered, lower latency for a bit higher CPU use
+	prefetch-key: yes